*{
    padding: 0px;
    margin:0px;
}

.body{
    width:100%;
    
    .first{
        .top{
            background-color: rgb(172, 172, 172);
            color: white;
            text-align: center;
            width: 50px;
            height: 50px;
            border-radius: 20px;
            position: fixed;
            top:650px;
            left:1500px;
            line-height: 50px;
            display:none;
        }
        width: 100%;
        height: 100vh;
        background-image: url("../img/first.jpeg");
        background-position: center center;
        background-size:cover;
        .headers{
            opacity: 0.9;
            width: 100%;
            position: fixed;
            top: 0;
            // border: 1px solid red ;
            .header{
                height: 65px;
                width: 1440px;
                margin: 0 auto ;
                display: flex;
                justify-content: space-between;
                .logo{
                    height:65px;
                    width: 34px;
                    img{
                        margin-top: 15px;
                        height: 34px;
                        width: 34px;
                        border-radius: 40%;
                    }
                }
                nav{
                    width:845px;
                    height:65px;
                    ul{
                        width:845px;
                        height:65px;
                        display: flex;
                        justify-content: space-between;
                        li{
                            list-style: none;
                            a{
                                text-decoration: none;
                                color: white;
                                line-height: 65px;
                                font-size: 14px;
                                font-weight: 500;
                                // font-family: MiSans,serif;
                                &:hover{
                                    color:#ff6900;
                                }
                                
                            }
                            .lifirst{
                                color:#ff6900;
                            }
                        }
                    }
                }
                .login{
                    height:65px;
                    a{
                        line-height: 65px;
                        text-decoration: none;
                        color: white;
                        font-size: 14px;
                        font-weight: 500;
                        &:hover{
                            color:#ff6900;
                        }
                    }
                    span{
                        line-height: 65px;
                        color: white;
                        margin:0 20px;
                    }
                }
            }
        }
    }
    .tow{
        height: 100vh;
        img{
            width: 100%;
        }
        // background-color: rgb(117, 241, 8);
    }
}